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Date: Sat, 18 Sep 2021 20:24:14 +0800
From: kernel test robot <lkp@...el.com>
To: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Christoph Hellwig <hch@....de>
Subject: drivers/watchdog/bcm63xx_wdt.c:147:37: sparse: sparse: incorrect
type in initializer (different address spaces)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 4357f03d6611753936e4d52fc251b54a6afb1b54
commit: ddb002d6d6af12c45dd9d565cadf0f40b36b7c25 MIPS: uaccess: Reduce number of nested macros
date: 5 months ago
config: mips-randconfig-s031-20210918 (attached as .config)
compiler: mips-linux-gcc (GCC) 11.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ddb002d6d6af12c45dd9d565cadf0f40b36b7c25
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout ddb002d6d6af12c45dd9d565cadf0f40b36b7c25
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=mips
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
sparse warnings: (new ones prefixed by >>)
command-line: note: in included file:
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined
builtin:0:0: sparse: this was the original definition
drivers/watchdog/bcm63xx_wdt.c:59:9: sparse: sparse: cast removes address space '__iomem' of expression
drivers/watchdog/bcm63xx_wdt.c:60:9: sparse: sparse: cast removes address space '__iomem' of expression
drivers/watchdog/bcm63xx_wdt.c:61:9: sparse: sparse: cast removes address space '__iomem' of expression
drivers/watchdog/bcm63xx_wdt.c:66:9: sparse: sparse: cast removes address space '__iomem' of expression
drivers/watchdog/bcm63xx_wdt.c:67:9: sparse: sparse: cast removes address space '__iomem' of expression
drivers/watchdog/bcm63xx_wdt.c:94:28: sparse: sparse: Using plain integer as NULL pointer
>> drivers/watchdog/bcm63xx_wdt.c:147:37: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected char const [noderef] __user *__p @@ got char const * @@
drivers/watchdog/bcm63xx_wdt.c:147:37: sparse: expected char const [noderef] __user *__p
drivers/watchdog/bcm63xx_wdt.c:147:37: sparse: got char const *
drivers/watchdog/bcm63xx_wdt.c:222:27: sparse: sparse: incorrect type in initializer (incompatible argument 2 (different address spaces)) @@ expected int ( *write )( ... ) @@ got int ( * )( ... ) @@
drivers/watchdog/bcm63xx_wdt.c:222:27: sparse: expected int ( *write )( ... )
drivers/watchdog/bcm63xx_wdt.c:222:27: sparse: got int ( * )( ... )
vim +147 drivers/watchdog/bcm63xx_wdt.c
b63aa731cd9e3f Florian Fainelli 2010-08-28 134
b63aa731cd9e3f Florian Fainelli 2010-08-28 135 static ssize_t bcm63xx_wdt_write(struct file *file, const char *data,
b63aa731cd9e3f Florian Fainelli 2010-08-28 136 size_t len, loff_t *ppos)
b63aa731cd9e3f Florian Fainelli 2010-08-28 137 {
b63aa731cd9e3f Florian Fainelli 2010-08-28 138 if (len) {
b63aa731cd9e3f Florian Fainelli 2010-08-28 139 if (!nowayout) {
b63aa731cd9e3f Florian Fainelli 2010-08-28 140 size_t i;
b63aa731cd9e3f Florian Fainelli 2010-08-28 141
b63aa731cd9e3f Florian Fainelli 2010-08-28 142 /* In case it was set long ago */
b63aa731cd9e3f Florian Fainelli 2010-08-28 143 expect_close = 0;
b63aa731cd9e3f Florian Fainelli 2010-08-28 144
b63aa731cd9e3f Florian Fainelli 2010-08-28 145 for (i = 0; i != len; i++) {
b63aa731cd9e3f Florian Fainelli 2010-08-28 146 char c;
b63aa731cd9e3f Florian Fainelli 2010-08-28 @147 if (get_user(c, data + i))
b63aa731cd9e3f Florian Fainelli 2010-08-28 148 return -EFAULT;
b63aa731cd9e3f Florian Fainelli 2010-08-28 149 if (c == 'V')
b63aa731cd9e3f Florian Fainelli 2010-08-28 150 expect_close = 42;
b63aa731cd9e3f Florian Fainelli 2010-08-28 151 }
b63aa731cd9e3f Florian Fainelli 2010-08-28 152 }
b63aa731cd9e3f Florian Fainelli 2010-08-28 153 bcm63xx_wdt_pet();
b63aa731cd9e3f Florian Fainelli 2010-08-28 154 }
b63aa731cd9e3f Florian Fainelli 2010-08-28 155 return len;
b63aa731cd9e3f Florian Fainelli 2010-08-28 156 }
b63aa731cd9e3f Florian Fainelli 2010-08-28 157
:::::: The code at line 147 was first introduced by commit
:::::: b63aa731cd9e3fed7694a99f9c233f5f4b244f03 watchdog: add support for Broadcom BCM63xx built-in watchdog
:::::: TO: Florian Fainelli <florian@...nwrt.org>
:::::: CC: Wim Van Sebroeck <wim@...ana.be>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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